17921000442 has 8 divisors (see below), whose sum is σ = 35842000896. Its totient is φ = 5973666812.

The previous prime is 17921000441. The next prime is 17921000467. The reversal of 17921000442 is 24400012971.

It is a sphenic number, since it is the product of 3 distinct primes.

17921000442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (17921000441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1493416698 + ... + 1493416709.

It is an arithmetic number, because the mean of its divisors is an integer number (4480250112).

Almost surely, 2^17921000442 is an apocalyptic number.

17921000442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17921000442 is a wasteful number, since it uses less digits than its factorization.

17921000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986833412.

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 17921000442 in words is "seventeen billion, nine hundred twenty-one million, four hundred forty-two", and thus it is an aban number.